HP 1000

HP 1000

P1010048.JPG	P1010049.JPG
P1010050.JPG	P1010051.JPG
P1010052.JPG	P1010053.JPG

Various Posts on classiccmp.org regarding the HP 1000:

From postings by William Maddox, Jay West, Joe R.

William Maddox

There should be another card cage on the front side, behind the front panel. Your CPU and memory cards would go there.

--Bill

Jay West

Memory cards, yes. CPU cards, no. There is only one cpu card and it isn't in any card cage. It's the big board at the bottom that the two upright backplane cards plug in to.

Jay

Joe R

There sounds to be at least one small part (screw, nut, broken plastic)
>rattling around inside the front area, so it will have to be opened no
>matter what.



   If you don't have the key, you can carefuly pry it open. The latch is a
simple aluminium strap and it will bend easily. After you get it open you
can remove the strap and straighten it out and reuse it. I open and close
mine so often that I turned the lock 90d and left it unlocked and then
installed some velcro to hold the panel closed.  Under the front panel is a
removeable plate that covers the CPU and memory cards. BTW I've been told
not to run the 1000 sithout the plate since it controls the cooling air
flow.  One of the good things about the 1000s is that the scrappers
frequently don't realize that there's cards under the front panel so those
cards often don't get removed or monkeyed with.

<snip>
There was an empty slot a the top of this,
It appears to have a battery pack that was the rear panel.  Due to the
construction, I wonder if it was added by a system integrator. 

   Nope it's an option from HP.

   In case you haven't already found it, Al K has a good number of the
manusls this machine on his website.

link to main bitsavers Archive  hp1000

    Joe

>>and what steps should be taken before trying to do anything with it?

Yeah, do not turn it on before opening up the power supply. The power supply 
is extremely trivial to remove. Undo the molex connectors up front (or 
unhook the 4 or so wires if it's that version). Slide the two catches in 
front to unlatch. There may be two or four screws in back. Then slide the 
whole thing out the rear. Open the top plate (about 10 screws). Remove all 
the foam, and replace it! This power supply has a piece of foam glued to the 
top coverplate that is almost always turned to mush. It gets in everything 
in the power supply and the power supply doesn't take well to that from a 
heat perspective. Blow it all out thoroughly. I usually remove solids by 
hand, then vacuum, then compressed air. Then make sure to glue another piece 
of foam to the top cover, because if you don't, the wrong pressure at the 
right time can short the metal top to the cards inside - or worse, let the 
cards inside come loose.

It appeared to have had a Tandberg tape drive attached at some time.

In all my years of focusing on HP 2100/21MX M-E-F boxes, I've only come across ONE of those tandberg tape interfaces. I'd love to know what drive they went to - I believe the tandberg interface was 3rd party. I would imagine (given "Tandberg") that we're talking QIC-525 or something like that? I have no clue, as I said I've only seen one interface. I stuck in on the shelf in case I ever found said drive :)

the cables connected to the back of each card have all been cut

Of course, take those cables off completely. Cutting could have created shorts - before power up. Keep the hoods though, they are hard to find and quite useful.

There sounds to be at least one small part (screw, nut, broken plastic)
rattling around inside the front area, so it will have to be opened no
matter what.

The memory card cage is in front, behind the front panel. Should be a key in front (or two quickrelease tabs on older M series) that allows the front panel to swing down (or come off if tabs). You'll want to reseat the cards in front and back, and also the ribbon cables between the cards in front. Those memory cables are known for being finnicky. If you can't find the floating part.... there is one screw on the rear towards the bottom. Take that screw out, and the whole bottom panel will slide back an inch or so, then off. You'll find the part sitting there likely.

There was an empty slot a the top of this, so I may be out anything useful,
it may be a junk spare cage with a bunch of I/O if I had to guess.

No, that's not a problem at all. If you were using software that worked in polled mode, empty slots between cards were fine (and common). But if you were running anything that used interrupts, there could be no empty slots between cards (there was also a jumper card available, I have truckloads of those). But more to your point - after the last card, open slots are OK no matter what... plus, the interrupt chain starts at the bottom, so open slots at the top are likely OK.

At least
I didn't out a lot for it. I have to admit I was seduced by the switches
and lights that appeared to be on the front panel, and an obvious need to
fill some space in my pile with something.

I like the front panel on the 21MX MEF boxes (yours is a 2109B). I definitely far prefer the panel on the 2100A/S, but others will disagree (Bob S.). And when I compare those two - I'm talking from the perspective of entering long programs, not just setting a few registers here and there.

It appears to have a battery pack that was the rear panel. Due to the
construction, I wonder if it was added by a system integrator.

I have several of the standard HP battery backup options. Yours looks to be factory. If not, it's a very very close design. The gel packs in it likely don't hold a charge anymore, and are expensive to repair. You'll be wanting a battery eliminator plug I bet... the system will not come up without either a battery eliminator plug or a real battery.

Looks like you have an HS term board ... that's a good all around board as far as compatability with most terminals (non-HP). However, it's a PIG as far as load on the system. It's the board required for TSB console though. The BACI boards are much kinder to the system.

The microcircuit boards are sweet... I could always use a few more of those myself - if they are the nicer C variety. They are a general purpose interface board used for a bajillion different things, including a lot of custom stuff. After all, HP's were designed by engineers for engineers, and typically not for general purpose computing. More often than not, process control, ATF, etc.

I'd be curious (if I were you) just what microcode roms were on that FAB board under your cpu card there :)

The slides you have there are the ones I've generally seen come from military use.

Nice box!

Oh - something important. Judging by the front panel pencil marks, this system was booted from the device at IO select code 16. That would also be the slot that your tandberg interface was in. So, most likely, this system booted from that cartridge tape drive. I suggest you preserve the boot roms for this machine! You likely have a special boot rom just for that tandberg interface card which may well shed light on how that card and drive worked.

William wrote...
| There should be another card cage on the front side, behind the front panel. Your CPU and memory cards would go there.

Memory cards, yes. CPU cards, no. There is only one cpu card and it isn't in any card cage. It's the big board at the bottom that the two upright backplane cards plug in to.

Jay West